Highly debatable I would say. Sullivan was more dominant for much longer, and we don't really know how good his best opposition was.
No there is footage of him older putting his hands up to Corbett and some others at the Jeffries camp. It’s a good indicator of how he held his hands. Plus there’s a ton of stills from the kilrain fight and a few others. So actual fight footage no but there is some to give an idea.
I got Marciano stopping Sullivan late rounds ,however Marciano style plays right into Sullivan' power in a way . Marciano will definitely hit the canvas once or twice
Marciano would beat sullivan . sullivans defense was almost non existent from what ive read . i could be wrong .
Just saw don cockell went 9 rounds with rocky ...just saying though ... Sullivan who was 205 like cockell and sullivan has power cockell does not. He would have a pretty high chance of maybe putting rockies lights out
